From what I've read, I will not be appreciating cranial training.
However, I am open to other methods of manipulation that have been proven effective. Will OMM cure everything? No. But, it will be a tool that you may choose to use for some things.
You don't have to be all gung-ho about everything in OMT. Remember that the vast majority of your training will be "traditional". Just look at any DO school curriculum.
Also, remember that many people benefit from chiro, and that many physical therapists are interested in manipulative techniques due to it's efficacy. So, manipulation works for some things.
Just look at it as some additional training in such techniques, which is what it is.
Osteopathic medicine has always focused on preventative medicine and a general holistic approach to healthcare. But, DO's do not have a monopoly on this. So, it's up to you to practice the way you wish.
As a physician, you will not always agree with an approach to "traditional" medicine either. You may have a different view based on your own beliefs and values. So, OMT will not be the only area in which you'll need to sort things out in the future, for yourself.